"""Tests for board column detection helpers."""
from __future__ import annotations

from unittest.mock import MagicMock

from selenium.common.exceptions import InvalidSelectorException

from onedrive_planner import (
    _FIRST_COLUMN_CLUSTER_WIDTH_PX,
    _element_in_board_container,
    _parent_element,
)


def test_first_column_cluster_width_reasonable():
    assert _FIRST_COLUMN_CLUSTER_WIDTH_PX >= 150


def test_parent_element_stops_at_html_document_error():
    """ChromeDriver rejects .. on <html> with InvalidSelectorException."""
    html = MagicMock()
    html.tag_name = "html"
    html.find_element.side_effect = InvalidSelectorException(
        'The result of the xpath expression ".." is: [object HTMLDocument].'
    )
    assert _parent_element(html) is None


def test_parent_element_returns_parent_for_body():
    body = MagicMock()
    body.tag_name = "body"
    parent = MagicMock()
    parent.tag_name = "html"
    body.find_element.return_value = parent
    assert _parent_element(body) is parent


def test_element_in_board_container_does_not_crash_at_root():
    """Containment walk must not raise when ancestors hit document root."""
    child = MagicMock()
    child.tag_name = "div"
    container = MagicMock()
    container.tag_name = "div"

    html = MagicMock()
    html.tag_name = "html"
    html.find_element.side_effect = InvalidSelectorException("document root")

    body = MagicMock()
    body.tag_name = "body"
    body.find_element.return_value = html

    child.find_element.return_value = body

    assert _element_in_board_container(child, container) is False